MONTHLY WATER SUPPLY OUTLOOK
NOAA / NATIONAL WEATHER SERVICE
CALIFORNIA NEVADA RIVER FORECAST CENTER
1000 AM PST SAT MAY 05 2012

                                  May 1 2012 

COASTAL BASINS

                                  Period      MP   MP%   RMAX   RMIN    AVG
                                  ------    ----   ---   ----   ----    ---
Williamson River
  Sprague, blo                    May-Sep    250    94    300    200    267
Sprague River
  Chiloquin, nr                   May-Sep    140    90    190     90    155
Upper Klamath Falls River
  Inflow                          May-Sep    320    94    415    225    340
Lost River
  Gerber Reservoir Inflow         May-Jul    4.4    69   14.5   0.20    6.4
  Clear Lake Reservoir Inflow     May-Jul   16.0    83     33   0.80   19.3
Scott River
  Fort Jones, nr                  Apr-Jul    240   133    280    210    181
Trinity River
  Trinity Lake                    Apr-Jul    720   113    790    680    635

SACRAMENTO RIVER ABOVE BEND BRIDGE

Pit River
  Montgomery Ck, nr               Apr-Jul    830    88    915    720    940**
Mccloud River
  Shasta Lake, abv                Apr-Jul    390   105    445    340    370
Sacramento River
  Delta                           Apr-Jul    330   114    390    270    290
  Shasta Dam                      Apr-Jul   1660    93   2060   1420   1790
  Bend Bridge, abv, Red Bluff, nr Apr-Jul   2200    90   2700   1930   2440

FEATHER RIVER ABOVE OROVILLE RESERVOIR

North Fork Feather River
  Prattville, nr                  Apr-Jul    260    78    320    220    333*
  Big Bar                         Apr-Jul    790    82    980    720    962*
Feather River
  Oroville Dam                    Apr-Jul   1410    80   1780   1280   1760

YUBA RIVER ABOVE SMARTVILLE

North Yuba River
  Goodyears Bar, blo              Apr-Jul    255    93    310    220    273*
South Yuba River
  Langs Crossing                  Apr-Jul    200    89    250    170    225*
Yuba River
  Englebright Reservoir           Apr-Jul    860    86   1040    720    995

AMERICAN RIVER ABOVE FOLSOM RESERVOIR

Middle Fork American River
  Auburn, nr                      Apr-Jul    400    82    520    350    490*
Silver Creek
  Union Valley                    Apr-Jul     80    82    100     65     98*
  Camino Dam, blo                 Apr-Jul    130    82    160    110    158*
American River
  Folsom Reservoir                Apr-Jul   1010    82   1280    870   1230

SAN JOAQUIN BASIN

South Fork San Joaquin River
  Hooper Ck, blo, Florence Lk, nr Apr-Jul    110    57    140     70    192*
San Joaquin River
  Millerton Lake                  Apr-Jul    660    52    870    500   1270
Merced River
  Pohono Bridge, at, Yosemite, nr Apr-Jul    210    58    260    160    360*
  Merced Falls, blo               Apr-Jul    320    50    430    240    645
Tuolumne River
  Hetch Hetchy, nr                Apr-Jul    320    54    430    260    596*
  La Grange, nr                   Apr-Jul    630    51    850    480   1230
Middle Fork Stanislaus River
  Beardsley Dam, blo              Apr-Jul    190    59    240    140    320*
Stanislaus River
  New Melones Dam                 Apr-Jul    400    58    500    300    695
North Fork Mokelumne River
  West Point                      Apr-Jul    250    60    330    195    416*
Mokelumne River
  Pardee Reservoir                Apr-Jul    275    60    360    220    460
Cosumnes River
  Michigan Bar                    Apr-Jul    110    89    135     90    123

TULARE LAKE BASIN

Kern River
  Kernville, nr                   Apr-Jul    180    45    270    140    398*
  Isabella Dam, blo               Apr-Jul    210    44    310    170    480
  Bakersfield, nr                 Apr-Jul    210    43    300    160    490
Tule River
  Success Dam                     Apr-Jul     45    68     60     35     66
Kaweah River
  Terminus Dam                    Apr-Jul    160    55    200    110    290
North Fork Kings River
  Cliff Camp, nr                  Apr-Jul    140    58    170    100    240*
Kings River
  Pine Flat Dam, blo              Apr-Jul    640    51    850    490   1250

EASTSIDE SIERRA - HUMBOLDT BASIN

Truckee River
  Lake Tahoe Stage Rise           Apr-High  0.65    47   0.96   0.35   1.38
Little Truckee River
  Stampede Dam                    Apr-Jul     45    56    129   1.60     80
Truckee River
  Farad                           Apr-Jul    135    52    205     63    260
East Fork Carson River
  Gardnerville, nr                Apr-Jul     85    45    145     25    189
West Fork Carson River
  Woodfords                       Apr-Jul     26    46     40   12.2     56
Carson River
  Carson City, nr                 Apr-Jul     50    27     72     33    188
  Fort Churchill, nr              Apr-Jul     44    25     85   19.0    178
East Walker River
  Bridgeport, nr                  Apr-Aug     25    37     75   0.70     67
West Walker River
  Ltl Walker, blo, Coleville, nr  Apr-Jul     69    44     99     39    156
North Fork Humboldt River
  Devils Gate, at, Halleck, nr    Apr-Jul    9.0    26   19.2    4.2     34*
South Fork Humboldt River
  Dixie Creek, abv, Elko, nr      Apr-Jul   14.0    18     38   1.50     76
Marys River
  Hot Springs, abv, Deeth, nr     Apr-Jul   13.0    33     35   0.40     39
Humboldt River
  Elko, nr                        Apr-Jul     35    23     93    5.0    154
  Palisade                        Apr-Jul     50    20    138    5.0    250
  Comus                           Apr-Jul     32    14    120    2.0    225
  Imlay, nr                       Apr-Jul   19.0    10    144    2.0    188
Martin Creek
  Paradise Valley, nr             Apr-Jul    5.8    31   14.0    2.5   18.7
			
NOTE:  Forecasts for Water Year 2012 will use 30 Year Averages 
       for 1971-2000.
			
* 30 Year Averages for 1971-2000 are incomplete.  Those forecast
points with an asterisk have incomplete averages, so 1961-1990 averages
are listed.  The new averages will be incorporated into this product
when the complete data sets become available. 			

MP    Most probable volume in 1000 acre-feet.
MP%   Most probable volume in percent of the 71-00 average.
RMAX  Volume that has a 10 percent chance of being exceeded.
RMIN  Volume that has a 90 percent chance of being exceeded.
AVG   Average volume for the 71-00 period.

All forecast volumes reflect natural flow.  Actual observed flow may
be affected by upstream water management.

CNRFC